"Calif Bill" wrote in message
nk.net...

"Bryan" wrote in message
. com...

"Calif Bill" wrote in message
ink.net...
Not for dialup.

http://www.youtube.com/w/Extreme-Spr...rint%20jetboat

Some other neat videos also.


Bill,
Is it an illusion or are those boats turning as sharply and moving as
fast as the video suggests?

If so, what's the design feature that makes them able to make such sharp
controlled tight turns at speed?


Did not always look controlled. :) They have lots of sharp reverse chines
on the bottom, and the jet drive moves the back of the boat in a desired
direction. I have spun out my boat in the delta. do a 180 and slide
backwards.


Picture of the bottom. Delta pad with lots of chines.
http://www.ussbaracing.com/2004%20Ga...5c1932_std.jpg